US4468495A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fire retardant powders
Assignee: Individual
•
Filing: 1983-01-28
•
Granted: 1984-08-28
•
Expires: 2003-01-28
Abstract
Abstract Fire retardant compositions in the form of a powder are produced from the following components: ______________________________________ Component Parts by Weight ______________________________________ Aldehyde 70-110 Ammonium phosphate 120-180 Ammonium sulfate 120-180 Urea 120-180 Alkanolamine 35-50 Phosphoric acid 100-150 ______________________________________ Also provided are fire retardant compositions containing the powder, and methods for treating substrates such as paper or wood to impart fire retardant properties thereto.
Inventors
- 👤 Glenn A. Pearson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 18:37
CPC Classifications
D; D21; D21H; D21H21/00; D21H21/14; D21H21/34; C; C08; C08G; C08G12/00; C08G12/02; C08G12/40; C08K; C08K13/00; C08K13/02; C09; C09K; C09K21/00; C09K21/02; C09K21/04; D21H5/00; D21H5/0002; D21H17/00; D21H17/20; D21H17/33; D21H19/00; Y; Y10; Y10S; Y10S260/00; Y10S260/24; Y10S428/00; Y10S428/92; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31855; Y10T428/31859; Y10T428/3187; Y10T428/31873; Y10T428/31942; Y10T428/31949; Y10T428/31964
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
104 words
A fire retardant composition comprising a powder resin which is the reaction product of the following components: (a) about 70-110 parts by weight of an aldehyde, (b) about 120-180 parts by weight of an ammonium phosphate, (c) about 120-180 parts by weight of ammonium sulfate, (d) about 120-180 parts by weight of urea, (e) about 35-50 parts by weight of alkanolamine, and (f) about 100-150 parts by weight of phosphoric acid, components (a), (b), (c), (d) and (e) having been mixed together and heated at temperatures of about 160°-200° F., the phosphoric acid then being added to a mixture of all the other components.
Claim 2
Dependent Claim
104 words
A fire retardant composition comprising a powder resin which is the reaction product of the following components: (a) about 70-110 parts by weight of an aldehyde, (b) about 120-180 parts by weight of an ammonium phosphate, (c) about 120-180 parts by weight of ammonium sulfate, (d) about 120-180 parts by weight of urea, (e) about 35-50 parts by weight of alkanolamine, and (f) about 100-150 parts by weight of phosphoric acid, components (a), (b), (c), (d) and (e) having been mixed together and heated at temperatures of about 160°-200° F., the phosphoric acid then being added to a mixture of all the other components.
Claim 3
Dependent Claim
26 words
A composition according to claim 1 wherein the composition also contains a water miscible binder selected from the group consisting of lacquer and an acrylic resin.
Claim 4
Dependent Claim
89 words
A composition according to claim 1 wherein the aldehyde is present in an amount of about 80-100 parts by weight, the ammonium phosphate is present in an amount of about 130-170 parts by weight, the ammonium sulfate is present in an amount of about 130-170 parts by weight, the urea is present in an amount of about 130-170 parts by weight, the alkanolamine is present in an amount of about 40-45 parts by weight, and the phosphoric acid is present in an amount of about 110-140 parts by weight.
Claim 5
Dependent Claim
29 words
A composition according to claim 3 which contains about 5-50 parts by weight of a water miscible binder selected from the group consisting of lacquer and an acrylic resin.
Claim 6
Dependent Claim
12 words
A composition according to claim 1 wherein the aldehyde is 37% formaldehyde.
Claim 7
Dependent Claim
12 words
A composition according to claim 1 wherein the alkanolamine is 85% triethanolamine.
Claim 8
Dependent Claim
14 words
A composition according to claim 1 wherein the phosphoric acid is 85% phosphoric acid.
Claim 9
Dependent Claim
13 words
A composition according to claim 1 wherein the ammonium phosphate is diammonium phosphate.
Claim 10
Dependent Claim
55 words
A fire retardant powder composition comprising about 243 parts of 37% formaldehyde, about 150 parts of diammonium phosphate, about 150 parts of ammonium sulfate, about 150 parts of urea, about 50 parts of 85% triethanolamine, and about 150 parts of 85% phosphoric acid, the phosphoric acid being added to a mixture of the other ingredients.
Claim 11
Dependent Claim
55 words
A fire retardant powder composition comprising about 243 parts of 37% formaldehyde, about 150 parts of diammonium phosphate, about 150 parts of ammonium sulfate, about 150 parts of urea, about 50 parts of 85% triethanolamine, and about 150 parts of 85% phosphoric acid, the phosphoric acid being added to a mixture of the other ingredients.
Claim 12
Dependent Claim
24 words
A composition according to claim 9 which also contains a water miscible binder selected from the group consisting of lacquer and an acrylic resin.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-08-28 | 1988-02-27 | 1988-08-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-08-28 | 1992-02-27 | 1992-08-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-08-28 | 1996-02-27 | 1996-08-28 | $7700.00 | Window Closed / Lapsed |